<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			p,h1,h2{
				font-size: 16px;
				color: red;
			}
			.green{
				font-size: 16px;
				color: green;
			}
			.yellow{
				font-size: 16px;
				color: yellow;
			}
			.blue{
				font-size: 24px;
				color: blue;
			}
			.red{
				font-size: 24px;
				color: red;
				}
			#blue{
					font-size: 16px;
					color: blue;
				}
		</style>
	</head>
	<body>
		<p>红色，字体大小16px</p>
		<p class="green">绿色</p>
		<p>红色，字体大小16px</p>
		<h1>红色，字体大小16px</h1>
		<h2>红色，字体大小16px</h2>
		<p class="blue">蓝色，字体大小24px</p>
		<p class="yellow"><strong>黄色，字体加粗</strong></p>
		<p>红色，字体大小16px</p>
		<p class="blue">蓝色，字体大小24px</p>
		<h1 class="red">红色，字体大小24px</h1>
		<h2 id="blue">蓝色，字体大小16px</h2>
		<p class="yellow"><strong>黄色，字体加粗</strong></p>
	</body>
</html>
